Answer:
Amusement parks, penny arcades, dance halls, and other commercial amusements flourished. As early as 1910, when there were 10,000 movie theaters, the movies had become the nation's most popular form of commercial entertainment.
A I’m pretty sure ............
More consumers want a product.
Think about it: the demand of the product <u>increased</u>.
The demand of a product is just what it sounds like - what is demanded. In this case, it is how much is demanded, or <u>wanted</u>.
Getting technical, a basic rule of economics is that <em>price doesn't shift the curve</em>, but even without knowing this, the answer can be figured out once you know what the demand of a product is.